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The need to generate new spaces is vital today, especially when the commercial activities of the citizens of different States require purchasing different products, require the creation of international rules governing such activities, but which are consistent with the internal rules. MSMEs became the best way to generate new business relationships with companies in the same category in other States. As shown in this article these companies have contributed to the development of the internal and external economy of different countries. Private international law presents the most important tools for the commercial evolution, from the beginnings of humanity, both after the Second World War to establish a new way of seeing the world
